12996843651 has 72 divisors (see below), whose sum is σ = 21355616880. Its totient is φ = 7616030400.

The previous prime is 12996843617. The next prime is 12996843653. The reversal of 12996843651 is 15634869921.

12996843651 is a `hidden beast` number, since 12 + 99 + 68 + 436 + 51 = 666.

It is not a de Polignac number, because 12996843651 - 2¹¹ = 12996841603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12996843653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11511255 + ... + 11512383.

It is an arithmetic number, because the mean of its divisors is an integer number (296605790).

Almost surely, 2^12996843651 is an apocalyptic number.

12996843651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12996843651 is a deficient number, since it is larger than the sum of its proper divisors (8358773229).

12996843651 is a wasteful number, since it uses less digits than its factorization.

12996843651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1174 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 12996843651 in words is "twelve billion, nine hundred ninety-six million, eight hundred forty-three thousand, six hundred fifty-one".